From d1e9a582adba5c9602c7fb3a2c75df7fa2eedcaa Mon Sep 17 00:00:00 2001
From: Simon Kelley <simon@thekelleys.org.uk>
Date: Tue, 23 Oct 2012 17:00:57 +0100
Subject: [PATCH] Use dhcp-range tags when replying to DHCPv6
 information-request.

---
 src/rfc3315.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/rfc3315.c b/src/rfc3315.c
index 9297d52..77e0900 100644
--- a/src/rfc3315.c
+++ b/src/rfc3315.c
@@ -1010,6 +1010,13 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh
       
     case DHCP6IREQ:
       {
+	/* We can't discriminate contexts based on address, as we don't know it.
+	   If there is only one possible context, we can use its tags */
+	if (context && !context->current)
+	  {
+	    context->netid.next = NULL;
+	    context_tags =  &context->netid;
+	  }
 	log6_packet("DHCPINFORMATION-REQUEST", clid, clid_len, NULL, xid, iface_name, ignore ? "ignored" : hostname);
 	if (ignore)
 	  return 0;